Scalable video stream multicast method based on qos intelligent perception in sdn environment
A technology of intelligent perception and video streaming, which is applied in branch offices providing special services, digital transmission systems, data exchange networks, etc., and can solve problems such as failure to consider user network quality service experience.
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[0104] Experimental environment: The SDN controller in this example uses Floodlight1.2, the network topology is built using the network emulator Mininet2.2, and the Iperf contracting tool is used to simulate the SVC layered video stream
[0105] Network topology: such as Figure 9 As shown, one server (server), five clients (d 1 -d 5 ) and eleven switches (switch), each link is marked next to its bandwidth capacity and propagation delay, the units are megabits per second (Mbps) and milliseconds (ms).
[0106] Experimental parameters: The server (server) encodes the video into a base layer and an enhancement layer, and the bit rate of each layer is 1Mbps. The maximum allowable delay and delay jitter are set to 90ms and 30ms respectively.
[0107] Implementation process:
[0108] 1. At time t=0s, d 5 request the base layer video stream from the server, d 1 , d 2 , d 4 Request both base layer and enhancement layer video streams. The multicast routing module in Floodlight...
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